L4971D013TR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	L4971
Supplier Device Package:	16-SO W
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz ~ 300kHz
Current - Output:	1.5A
Voltage - Output (Max):	50V
Series:	--
Voltage - Input (Max):	55V
Voltage - Input (Min):	8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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L4971D013TR Application Field and Working Principle

The L4971D013TR is a medium power sub-miniature step-down DC/DC converter power management integrated circuit (PMIC) belonging to the DC/DC (Direct Current to Direct Current) Switching Regulators family. It is employed in applications where a compact, low quiescent current and efficient voltage-squeezing circuit is demand.Typical applications of the L4971D013TR would include low-power portable systems, industrial, automotive and communications equipment, as well as applications that require the conversion of a low input voltage to a far lower output voltage.The L4971D013TR integrates numerous functions, such as double overload protection for the internal switch and a constant-frequency hysteretic current-mode control. This allows it to be used in a variety of applications that require high efficiency power supply solutions. The device features an accurate, adjustable output voltage as low as 0.65V, and is able to deliver up to 600mA at an ambient temperature of +85° C. This is thanks to its innovative high-frequency architecture and its trench technology, which is designed to provide high efficiency and minimum losses in a compact size.In terms of its working principle, the L4971D013TR makes use of the hysteresis of a feedback network to control the output voltage. A hysteretic switching regulator circuit works by comparing the voltage of the output signal with a reference signal by means of a comparison circuit, then increases or decreases the duty cycle of the switching regulator circuit, depending on the difference between the output and reference values.The L4971D013TR also features an integrated fast inhibitor circuit, which prevents erroneous conduction of the internal switch and eliminates the need for an external Schottky diode. This feature helps reduce the overall cost of the system and improves its efficiency.In short, the L4971D013TR’s features make it well suited to a variety of applications where low power, efficiency, and a small form factor are important. Thanks to its innovative high-frequency architecture, trench technology, and integrated fast inhibitor circuit, it can provide a highly efficient and cost-effective solution to portable and industrial applications, as well as automotive and communication systems.

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